CN2224065Y

CN2224065Y - Angled-sliding preventive adjustable spanner

Info

Publication number: CN2224065Y
Application number: CN 95203867
Authority: CN
Inventors: 刘万程
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-21
Filing date: 1995-02-21
Publication date: 1996-04-10
Anticipated expiration: 2005-02-21

Abstract

The utility model discloses an angled-sliding preventive adjustable spanner which is a more effective and convenient spanner in use, belonging to a common manual tool. A notches of 120 DEG respectively arranged on the nipping planes of the upper and the lower teeth of an existing adjustable spanner respectively can make the contact stress faces of the adjustable spanner with a hexagon bolt or with a hexagon nut increase from two to four at least to effectively avoid the phenomenon of slipping angle when the hexagon bolt or the hexagon nut is screwed emphatically.

Description

Anti-skidding angle adjustable wrench

The utility model belongs to hand-held tool commonly used, relates to a kind of adjustable wrench.

Existing adjustable wrench has only two faces to contact with hexagon-headed bolt or hex nut when work, is easy to occur sliding angle phenomenon, damages hexagon-headed bolt or hex nut, so that needs to adopt other time-consuming disruptive methods to remove.

The purpose of this utility model provides a kind of adjustable wrench that can prevent the on-slip angle.

The scheme that this purpose is achieved is: the breach [6,7] of all opening a hexagonal angle at the upper tooth [2] and the movable lower tooth [3] of adjustable wrench, the angular bisector of these two hexagonal angles overlaps, and it is vertical with the extended line on the seaming plane [8,9] of upper tooth and movable lower tooth, when the opening of lower tooth on the adjustable wrench was closed, above-mentioned two breach surrounded a prismatic.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is an anti-skidding angle adjustable wrench front view.Movable lower tooth [3], adjustable screw [4] and dog screw [5] that this adjustable wrench by the upper tooth [2] that has a hexagonal angle breach [6] that connects together with handle [1], also has a hexagonal angle breach [7] are formed.

Fig. 2 is the schematic diagram of anti-skidding angle adjustable wrench when blocking hexagon-headed bolt that the across flats equates with spanner maximum open width or hex nut.

Fig. 3 is the schematic diagram of anti-skidding angle adjustable wrench when blocking the across flats less than the turret head nut of spanner maximum open width or hex nut.

Have 8 kinds of specifications of 100 * 13,150 * 18,200 * 24,250 * 30,300 * 36,375 * 46,450 * 55,600 * 65 (length (millimeter) * maximum open width (millimeter)) in the adjustable wrench series of existing standard GB 4440-84, its maximum open width equates with the opposite side of M8, M12, M16, M20, M24, M30, these 8 kinds of turret head spiral shell inspections of M36, M42 and hex nut respectively.Anti-skidding angle of the present utility model adjustable wrench only needs the common adjustable wrench of above-mentioned 8 kinds of specifications is improved, respectively opening one in the seaming plane of last lower tooth has the breach of the hexagonal angle of certain depth to get final product, also can suitably increase the length on seaming plane in case of necessity, spanner length and maximum open width remain unchanged, and make that spanner has 5 faces just to contact (as shown in Figure 2) with 5 faces of bolt or nut when blocking across flats's hexagon-headed bolt equal with spanner maximum open width and hex nut, when using anti-skidding angle adjustable wrench to pull to revolve the across flats, then there are 4 faces to contact (as shown in Figure 3) with 4 faces of bolt or nut less than the hexagon-headed bolt of spanner maximum open width or hex nut.Because existing adjustable wrench has only two faces to contact with hexagon-headed bolt or hex nut, so stress surface that anti-skidding angle of the present utility model adjustable wrench contacts with hexagon-headed bolt or hex nut has increased by one times (because each face of bolt or nut generally has only 1/3rd length stressed at least than existing adjustable wrench, so the length of the contact-making surface of spanner and bolt and nut not necessarily needs to be equal to or greater than the length of side of bolt and nut, as double offset ring spanner), spiral shell inspection nut sensitive for damages not just like this, thus sliding angle phenomenon prevented effectively.

The last lower tooth of anti-skidding angle of the present utility model adjustable wrench still leaves a bit of seaming plane [8,9], can be used for pulling fast under the narrow and small situation in status and revolve loosening inspection of turret head spiral shell and hex nut, also can pull and revolve the square head bolt nut, keep the advantage of existing wrench.Because stress surface increases, stress disperses, although therefore on the spanner lower tooth all opened a breach, its mechanical strength is enough.

The utility model is made easily, and existing spanner manufacturer need not increase equipment and need not to change process conditions then can produce, and also can not increase production cost.

In sum, the utility model provides a kind of more effective kind of spanner more easily that uses for people's production and life.

Claims

1, a kind of adjustable wrench, form by the upper tooth [2], movable lower tooth [3], adjustable screw [4] and the dog screw [5] that connect together with handle [1], it is characterized in that upper tooth and movable lower tooth all have the breach of a hexagonal angle [6,7], the angular bisector of these two hexagonal angles overlaps, and it is vertical with the extended line on last lower tooth seaming plane [8,9], when the opening of lower tooth on the adjustable wrench was closed, above-mentioned two breach surrounded a prismatic.